Bending device



March 4, 1930. M. w. WALKUP' BENDING DEVICE Filed Aug. 26, 1927 2 Sheets-Sheet March 4, 1930. M. w. WALKUP 1,749,616

BENDING DEVICE Filed Aug; 26, 1927 2 Sheets-Sheet 2 [7? en for Patented Mar. 4, 1930 PATENT OFFIQE ONTE w. .WALKUP, or oHroAGofILLINoIs BENDING DEVICE Application filed August 26, 1927. Serial No. 215,576

The invention relates to bending machines and more partlcularly to a device for imparting' a curvature to lathing such as corner beads, use'das a support for plastering.

It is an object of the invention to provide a device of the character described which is of simple construction and yet efliciently meets the requirements of curving lathing and particularly corner beads.

A further object aims at providing a device capable of imparting a predetermined curvature to lathing.

A still further object constitutes the provision of a device capable of imparting different curvatures to lathing in accordance with. special requirements.

It is also an object to provide certain details of construction and arran 'ement tending to enhance the efficiency and reliability of a device of this character.

WVith these and other objects in View which will become more apparent from a description of the invention, the latter comprises the means described in the following specifiication, particularly pointed out in the claims forming a part thereof and illustrated in the accompanying drawings, in which Fig. 1 is a top plan view of the device constructed in accordance with my invention;

Fig. 2 is an elevational view of the device;

Fig. 3 is a section on the line 3-3 of Fig. 2;

Fig. 4 is a section on the line 4-4 of Fig. 2;

Fig. 5 is a section on the line 55 of Fig. 3.

' The device shown in the drawings is intended primarily for the bending of lathing and particularly corner beads, but its use may be extended wherever articles are to be provided with a curvature.

Referring to the various views in the drawings, 1O designates a base plate which is sup ported by a plurality of legs 11. To the base plate 10, near one end thereof, a U-shaped member 12 is secured so that the cross member 13 thereof abuts the plate and is fastened thereto by a plurality of threaded members 14. The upstanding legs 15 and 16 of the member 12 are of unequal height. To the leg 15 a roller 17 is rotatably secured by a through bolt 18. A plurality of elongated, horizontal rollers 19 and 20 are secured in superposed relation to the leg 16 of the U-member 12. The rollers are mounted on through bolts 21 and 22, respectively, which are held to the leg 16 by nuts 23 and 24 abutting both sides of the leg 16. The latter is provided with an elongated slot 25 through which the bolts 21 and 22 project, so that adjustment of the rollers 19 and 20 is possible.

A U-member 26 is secured to the base plate 10 near the opposite end thereof and its construction and associated parts are in all respects identical with the first described U-member 12. Further description thereof is deemed, therefore, superfluous.

Intermediate to the U-members 12 and 26 and centrally of the base plate 10 an angular member 27 is provided. The horizontal leg 28 of said member is parallel to the base plate 10 and its free end is slotted to receive therein acircular lug 29 of a bearing plate 30 which is also parallel to the base plate and adapted to bear thereon.

A bolt 31 extends through aligned apertures in the lug 29 and the prongs 32 produced by the slotting of the horizontal leg 28 whereby the angular member 27 is pivotally secured to the bearing plate 30. The bearing plate 30 is provided on the top surface with circular depressions 34 and 35 to receive the heads of screws 36 which extend through apertures provided in the bearing plate and registering apertures in the base plate. The bearing plate 30 is provided with a bore '37 which opens into a counterbore 38 originating at the lower side of the bearing plate and houses the head of a screw 39 extending through an aperture in the base late.

p In order to adjust the angle member with reference to the base plate the angle member is swung about its pivot 31 to give access to the heads of the screws 36 which are then loosened or tightened as the case may be and subsequently the screw 39 is adjusted to engage the bottom of the counterbore 38. The vertical leg of the angle member is provided with a roller 40 which is secured in position by a bolt 41 having secured thereto a handle 42 so that the roller may be turned. upon manipulation of the handle.

The roller is formed as a grooved pulley and its inner circumference is knurled for a purpose hereafter explained. The horizontal leg 28 carries a plurality of washers 43 in superposed relation and provided with a central aperture for the passage of a bolt 44 which enters in threaded engagement in a screw threaded aperture 45 provided inthe horizontal member 28. A roller 46 is arranged between the head of the bolt 44 and the topmost washer 43. I

The vertical member 27 has pivotally secured thereto as at 47 a latch 48 which is adapted to engage with the lower side .of the bearing plate 30 so as to lock the angle memher to thebearing plate.

The device is primarily although not exclusively, intended for the. bending oflcorner beads so as to impart a curvaturethereta The corner beadcomprises the bead portion 49, the horizontal member 50andthe: vertical member 5L which are, of course, integral,

In operation the corner head is introduced so thatthe horizontal member passes between the; rollers 19 andv 20 of the Uemembers 12 and 26 and the vertical member 511.com tacts Withthe guide roller 46.. The roller 40 being slightly in alowerplane thanthe plane tangential, to .the, lower-roller 20, will; cause a bending of the bead 49 in theformiqf and a knurled roller supported from said base between said U-members and having its lowermost peripheral point below the interspace of said pairs of rollers.

2. A device of the character described, in-

cluding a base, spaced U-members, secured thereto, pairs of rollers secured to. the corresponding vertical legs oi said U-members, a single roller secured to the other leg of said U-members, a bracket adjustably secured to. said'base' intermediate said U-members, and a knurled roller secured to said bracket with its nethermost peripheral point below the interspace of said pairs of rollers.

In witness whereof I atEX my signature. MONTE arc the radius ofwhichv is determined by. the.

relative position of the rollers 40 and 20;. It

. it is desired to impartia diflerent'curvature;

to the corner bead, then the latch 48 is released the angular member 2 1 is swung to the right asviewed in Fig. 4 and the. screws 36* and 39 are adjusted to raise or lowenthe'bearing plate 30' and therewith the; roller 40 as requirements make itnecessary, whereupon the angular member is replaced, in original position andthe latch 48. swung, into engagea ment with the-bearing plate. .The roller40- being provided with a, knurlledcircumference will cause thecorner; bead toprogressthroughv the device-sothat thesame will-becomecurved; throughout its-length. It is obvious that; the; curvature imparted to the corner bead may, be accuratelypredetermined and that curvatures of variousdiameters may be impartedr While the drawingsshow a. preferred em. bodiment of thev invention, various changes. and alterations may be .made-Ewithout departs: ing from the spirit of the invention.

I, therefore, do; not limitmy inventionato the detailsof constructions asshowmnorto: the particular use described, butiniclude: all changes and alterations constituting. .departures within the scope oftheinvention asdefined in the appended claims.

I claim:

1. A device of the character described,.ineluding a base, U-members securedflthereto, pairs of rollers secured; to thecorresponding, verticallegs of said U-members,.a single roller secured to the other leg of saidfU members,- 

